US Bridges

SR 15 over Mississinewa River

Fair

Grant County, Indiana · 02.67 N SR 9 · Structure no. 003910

Built
1936
89 years old, rebuilt 1997
Condition
Fair
inspected June 2023
Type
Arch - Deck
Concrete
Length
347 ft
4 main spans
Daily traffic
5,807
2020 count
Owner
State
State Highway Agency

About this bridge

SR 15 over Mississinewa River is a concrete arch - deck carrying SR 15 over Mississinewa River in Grant County, Indiana. It was built in 1936 and reconstructed in 1997, so it is 89 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,807 vehicles a day, roughly 6% of them trucks, projected to reach 9,816 by 2031. The structure is 347 ft (105.7 m) long and 39 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesSR 15
CrossesMississinewa River
Location02.67 N SR 9
RouteState Highway 15
CountyGrant County
StateIndiana
Coordinates40.61199, -85.69282
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.6 US tons
Inventory rating27.3 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length347 ft (105.7 m)
Longest span65 ft (19.8 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,807 (2020)
Projected traffic9,816 by 2031
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 15 over Mississinewa River built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1997.

What condition is SR 15 over Mississinewa River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does SR 15 over Mississinewa River carry?

About 5,807 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is SR 15 over Mississinewa River?

The structure is 347 ft (105.7 m) long with a longest span of 65 ft (19.8 m) and a deck 39 ft wide.

Who owns SR 15 over Mississinewa River?

It is owned by the State Highway Agency.